About
Brawn Energy develops the large‑scale battery storage projects essential to Japan’s grid transformation. 
Brawn Energy is a developer of Extra High Voltage (EHV) battery energy storage systems (BESS) for the Japan market.
EHV projects are large, transmission-connected storage assets that support grid stability at a national level.
Established following the successful commercial operation of the 50 MW / 104MWh Project Helios in Hokkaido—one of Japan’s first EHV projects, operational since 2025—Brawn builds on the legacy of its predecessor, Manoa Energy.
The company’s seasoned team brings more than 100 years of cumulative experience in Japan’s energy markets and has collectively developed over 1 GW of battery storage projects worldwide to deliver a pipeline of approximately 1 GW of EHV BESS projects at various stages of development across Japan. 
Meet the team
Brawn Energy team brings over 100 years of combined experience across BESS development globally and Japan renewable energy market specifically, covering every stage of the project lifecycle.
Company Overview
Company name
Brawn Energy
Headquarters
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TEL/FAX
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Representative
Directors
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Established
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Capital
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Description of
Business
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Innovation for a smarter future
Client Testimonials
Frequently Asked Questions
What does Brawn Energy do?
Brawn Energy develops utility-scale, extra high voltage battery energy storage systems (EHV BESS) across Japan. We identify, develop and deliver large-scale energy storage projects that help balance Japan’s energy transition as the country transitions toward renewable energy.
What is Extra High Voltage (EHV) BESS and why does it matter?
Extra High Voltage BESS refers to battery storage systems that connect directly to the high-voltage transmission network, rather than the lower-voltage distribution grid. This enables significantly larger power capacity to be dispatched at a scale that can meaningfully support grid stability, absorb renewable surplus, and meet peak demand, making EHV BESS a critical infrastructure component in Japan’s energy transition.
Where is Brawn Energy based?
Brawn Energy is headquartered in Shinbashi, Tokyo, with projects under development across multiple regions of Japan.
How does Brawn engage with local communities?
Community engagement is central to how we develop projects. We work closely with local governments, landowners and residents from the earliest stages of site selection, ensuring projects are developed with transparency and long-term local benefit in mind.
How can I find out more about partnering with or investing in Brawn Energy?
We welcome enquiries from utilities, investors, landowners and potential talent. Please get in touch via our contact page and a member of our team will respond directly.